T. Widener. Blue Larkspur died in 1947, aged 21. Pedigree See also Idle Hour Stock Farm Myrtlewood X factor References Further reading External links Blue Larkspur's pedigree, with photo Blue Larkspur's page in the Hall of Fame, with painting America's Championship three-year-old males 1926 racehorse births 1947 racehorse deaths Racehorses trained in the United States Racehorses bred in Kentucky American Thoroughbred Horse of the Year United States Thoroughbred Racing Hall of Fame inductees United States Champion Thoroughbred Sires Thoroughbred family 8-f Chefs-de-Race